I don't think it has much of anything to do with narcolepsy.

Jewish people don't believe in Jesus by name but they do believe in the Messiah, they are still waiting for him. Is that enough? I don't know but I believe God is merciful and I would rather enter the next world believing what Jewish people believe than as an atheist. How did we get in this subject? Sorry I had to throw in my 2 cents worth .

It means your spirit, not your physical body. Everlasting spiritual life instead of being a non-Jesus believer that will perish. I'm very conflicted on this myself. The Jewish people do not believe in Jesus and he was a Jew. Also, God says there's no one above me or beside me. I am God.

"For God So loved The World That He Gave His Only Begotten Son,(Jesus) That Whosoever Believeth In Him Should Not Perish But Have Everlasting Life " I'm Just Praying "